Dear Colleagues,

Transition-metal based nanoparticles represent a pivotal class of advanced functional materials, distinguished by their unique physicochemical, optical, electronic, magnetic, and catalytic properties that diverge significantly from those of their bulk counterparts. Rapid progress in synthetic methodologies including chemical, physical, and biological approaches has enabled precise control over particle size, morphology, crystallinity, and surface chemistry. These advances have not only deepened our fundamental understanding of nanoscale phenomena but also accelerated the integration of transition-metal nanoparticles into a wide spectrum of technological applications.

This Special Issue aims to highlight the latest advances in the synthesis, characterization, functionalization, and theoretical understanding of transition-metal nanoparticles. Emphasis will be placed on contributions that elucidate structure–property relationships and their implications for applications in energy, environment, health, and information technologies. Studies involving computational modeling, mechanistic insights, toxicity assessments, and sustainable synthesis routes are also highly encouraged.

We welcome the submission of both original research articles and comprehensive review papers. Researchers are advised to register and log in to www.mdpi.com in order to submit their manuscripts online. Click here to access the submission form after registering. Submissions of manuscripts are accepted until the due date.